6 RCA 50B5 Vacuum Tubes Black Plate Lot Of Six 6LU8 T52 I have played it in

I have played it in my Alan Eaton singe-ended 45 amplifier (at 6

new in box GE 8CG7 / 8FQ7 tubes tested to spec on our Paul Hart-calibrated TV7/U

This lot of six Sylvania number / type 58 stamped- / engraved-base tubes was tested on our Paul Hart-calibrated TV7/U for shorts

new in box Zenith 17CK3 tubes tested to spec on our Paul Hart-calibrated TV7/U

Minimum (65%) is 44

6 RCA 50B5 Vacuum Tubes Black Plate Lot Of Six 6LU8 T52 I have played it inThese six RCA black plate RCA 50B5 tubes were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 40, 44, 48, 48, 61 and 66 where minimum (65%) is 45. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY